<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      body {
        margin: 0;
      }
      .box {
        width: 612px;
        margin: 30px auto;
      }
      .row {
        height: 200px;
        width: 612px;
        border: 1px solid;
        font-size: 0;
      }
      .inline-block {
        display: inline-block;
      }
      .row1-col1 {
        height: 200px;
      }
      .row1-item1 {
        width: 60px;
        background-color: red;
      }
      .row1-item2 {
        width: 80px;
        background-color: blue;
      }
      .row1-item3 {
        width: 60px;
        background-color: green;
      }
      .row1-col2 {
        width: 200px;
        height: 200px;
        background-color: antiquewhite;
        vertical-align: top;
      }
      .row1-col2 > .top {
        height: 40px;
      }
      .row1-col2 > .bottom {
        height: 160px;
      }
      .item4-1 {
        width: 150px;
        height: 100%;
      }
      .item4-2 {
        width: 50px;
        height: 100%;
      }

      .row3 {
        border-top-left-radius: 10px;
        border-bottom-right-radius: 10px;
      }
    </style>
  </head>
  <body>
    <div class="box">
      <!-- row1 start -->
      <section class="row row1">
        <div class="row1-item1 row1-col1 inline-block"></div>
        <div class="row1-item2 row1-col1 inline-block"></div>
        <div class="row1-item3 row1-col1 inline-block"></div>
        <div class="row1-col2 inline-block">
          <div class="row1-item4 top">
            <div class="item4-1 inline-block"></div>
            <div class="item4-2 inline-block"></div>
          </div>
          <div class="row1-item4 bottom"></div>
        </div>
      </section>
      <!-- row1 end -->
      <section class="row"></section>
      <section class="row row3"></section>
    </div>
  </body>
</html>
